An experiment after Hashiconf Digital 2020 for building a minimal Linux Nomad agent. This build has been developed and tested on Fedora 32, and copies some local dependencies into the qcow image during packaging. Qemu-img must be installed and the nbd kernel module loaded to mount the qcow2 image created during buildimg.sh. Accompanying blog post on Medium: https://medium.com/@boeroboy/nomad-vs-systemd-e0db80d34e8a
Source for sdhcp can be found here: https://git.2f30.org/sdhcp/.
Source for Linux kernel built directly:
git clone --depth=1 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
cd linux
make kvm_guest.config
make -j
Command to run qemu vm:
qemu-system-x86_64 -m 2G -smp cpus=4 -nographic \
-kernel bzImage-linux58 -append "console=ttyS0 root=/dev/sda" \
-net nic,model=virtio -net bridge,br=virbr0 \
-hda ~/Desktop/nomadinit/nomados.qcow2 --enable-kvm
Nomad is run at boot with config config/init.json
NomadOS can be built from the Nomad Init project. It adds the extlinux bootloader and bare minimal OS into a fully-contained QCOW or VMDK for virtualized or cloud compatible image. It is currently an experimental community project and not supported by HashiCorp. It can be built on a Linux distribution so long as all dependency paths in the build script are present in the environment.